[WebAssembly] Introduce a new pseudo-operand for unused expression results.

[oota-llvm.git] / lib / Target / WebAssembly / WebAssemblyMachineFunctionInfo.cpp

diff --git a/lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.cpp b/lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.cpp
index 542d984b900626bdee0f23a565915c1018756c1d..225c5d32cb5d12a7de7ab873771c2eaff263bc66 100644 (file)
--- a/lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.cpp
+++ b/lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.cpp
@@ -17,3 +17,9 @@
 using namespace llvm;
 
 WebAssemblyFunctionInfo::~WebAssemblyFunctionInfo() {}
+
+void WebAssemblyFunctionInfo::initWARegs() {
+  assert(WARegs.empty());
+  unsigned Reg = UnusedReg;
+  WARegs.resize(MF.getRegInfo().getNumVirtRegs(), Reg);
+}